Water → 2-methyl-5-methylthio-11H-1,2,4-triazolo[2,3-c][1,3]benzodiazepine

Participants

Reaction Steps

To a suspension of 0.91 g of sodium hydride in 27 ml of tetrahydrofuran is added dropwise a solution of 8.74 g of 5-methyl-3-(o-isothiocyanatobenzyl)-1,2,4-triazole in 60 ml of tetrahydrofuran over a period of 20 minutes. The mixture is stirred at room temperature for 2 hours. To the resulting suspension is added a solution of 5.4 g of methyl iodide in 35 ml of tetrahydrofuran dropwise at 0° over a period of 15 minutes. The mixture is stirred at room temperature for 1 hour, poured into water and extracted three times with methylene chloride. The organic extracts are dried over magnesium sulfate, decolorized with charcoal and evaporated to give 2-methyl-5-methylthio-11H-1,2,4-triazolo[2,3-c][1,3]benzodiazepine.

Provenance & Evidence